Batboard

I have never taken a close look at an IRLP board, but what I would like to do is set-up a simplex node using existing mobiles (gm 300) with the board. I haven't been able to find any documentation on using it with motorola. I'd also like the option to link it up to a repeater on an as-needed basis (whether it be simply plugging it into another radio or something more elaborate) Has any already done this and have a clear way to do it and what cables are needed? Thanks

Both echoLink And IRLP have good sites
and the info is there to use them on a radio.

EchoLink uses the normal Windows Program.

IRLP uses Linus RedHat.

Hi:
I am using A pair of Maxtracs (for Duplex) to link my IRLP node to the Downtown 900 MHz repeater. Just need to cut the power back some and run a fan on the Transmitter radio. The 16 pin connector will give all the signals you need for the IRLP board.
Good luck

Walt, WB4LDS
Tucson's 900 Repeaters
902.3125 / 927.3125
DPL 606
902.8875 / 927.8875
DPL 606
IRLP Node 3045
DM 42
http://members.cox.net/wb4lds/first.htm

Thanks for that info walt. I think I've heard someone talk about that 900 system you have over there over IRLP before. Perhaps it was you.

I'm trying to source the cables though. I take it these aren't included with the board. I have been unable to find these either for sale or even a schematic or anything at all!

Susan157 wrote:

Both echoLink And IRLP have good sites
and the info is there to use them on a radio.

Like I said, I have been unable to find the information anywhere. The most I got out of IRLP.NET was: "Motorola GM300 M120 series synthesized radios are plug and play. "

Great. But can you be more specific! How is anyone supposed to really determine the cost of the project? Or was I just supposed to order the board and then find out after that I need a computer running Linux and that the cables cost more than the board?

The cables should be easy to make. You will need to have mini-stereo plugs to go to the sound card and then a 9pin D connector for PTT, COS and stuff. One way to connect to the 16pin header connector is to use the wire-wrap tool that radio shack has. The wire is a bit thin (30ga) but will work fine. The other cheap method is to cut down a floppy or harddrive cable to 16 positions and splay the wires to what you need. The right way is to get a 16 pin connector kit from Mot or ebay and wire it all up clean with heat shrink and all. You are looking at about $10 - $30 depending on what parts you have on hand.

If you are using a 5 pin radio look on batlabs for info on how to make a maxtrac repeater and wire the COS to pin 8 on the RJ45 mic connector and hack up a ethernet cable. Even with the 16 pin radio I would go that way. just wire wrap the COS pin on the 16 pin connector and tack it to an unused pin on the RJ45.

Hi Rapidcharger..
I added a schematic of how I wired my IRLP with two Maxtracs. You can use one if you set the jumper on the IRLP borad.
Check it out on my web page below.

Walt, WB4LDS
Tucson's 900 Repeaters
902.3125 / 927.3125
DPL 606
902.8875 / 927.8875
DPL 606
IRLP Node 3045
DM 42
http://members.cox.net/wb4lds/first.htm